Bookmark and Share

Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

st: RE: combine data by groups


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: combine data by groups
Date   Wed, 3 Mar 2010 20:06:21 -0000

-collapse- to maxima. 

Advice: Don't flag questions as "easy". 

Nick 
[email protected] 

G. Dai

hi all, this is an easy question,but somehow I can't figure it.
The data is like:
personid     parentsid              momlive                   dadlive
001                   1                      0
 .
001                   2                      .
  1
002                   1                      1
 .
002                   2                        .
   1

where personid and parentsid  are person and her parents' id.
when parentid==1, we only record whether mom still live or not (momliv)
similarly
for parentid==2 and dadlive.

I want to change the data set to the following form

personid         momlive                   dadlive
001                  0                              1
002                   1                              1

what is the best way to do this?

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


© Copyright 1996–2018 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   Site index